Following the release of our first look at David Corenswet as Superman in James Gunns DCU, Los Angeles-based trainer Paolo Mascitti also revealed our first look at the actors efforts to become a true Man of Steel. After sharing an image of the actor in the gym, Mascitti has now revealed what it took to get Corenswet into superhero shape (via GQ), with the Pearl star consuming up to 6,000 calories a day in order to put on the mass necessary to fill the iconic costume.